Results 121 to 130 of about 56,013 (217)

The properties of primordially-seeded black holes and their hosts in the first billion years: implications for JWST

Astronomy & Astrophysics
Aims. James Webb Space Telescope (JWST) observations have opened a tantalising new window onto possible black holes as early as redshifts of z ∼ 10.4.
Dayal Pratika, Maiolino Roberto
doaj   +1 more source

Constraints on the Sen black hole mass and charge from quasi-periodic oscillations

European Physical Journal C: Particles and Fields
We analyze quasi-periodic oscillation data from selected X-ray binary systems hosting black holes. To model the spacetime geometry, we resort to the static Sen solution—originally derived in the framework of heterotic string theory—which reduces to the ...
Kuantay Boshkayev, Marco Muccino
doaj   +1 more source

A comparative artificial neural networks for Schwarzschild black hole (SBH) radius

Physics Open
It is consensus among researchers that the data for the black holes is complicated and extremely non-linear in nature. Therefore, it remains a challenging task for them to predict the key characteristics of concerned black holes accurately.
Khalil Ur Rehman, Wasfi Shatanawi, Weam G. Alharbi   +2 more
doaj   +1 more source

Simulating ULXs and Blazars as GRMHD Accretion Flows Around a Black Hole

The Astrophysical Journal
General relativistic magnetohydrodynamic (GRMHD) simulations have been instrumental in our understanding of high-energy astrophysical phenomena over the past two decades.
Mayank Pathak, Banibrata Mukhopadhyay
doaj   +1 more source

Astrophysical Evidence for Black Holes

, 1997
The case for collapsed objects in some X-ray binary systems continues to strengthen. But there is now even firmer evidence for supermassive black holes in galactic centres. Gravitational collapse seems to have occurred in the centres of most newly-forming galaxies, manifesting itself in a phase of quasar-like activity (which may be reactivated later ...
openaire   +2 more sources

Why the astrophysical Black Hole Candidates are not rotating black holes

, 2004
Thoroughly revised, new eqs.
openaire   +2 more sources

An interstellar mission to test astrophysical black holes. [PDF]

iScience
Bambi C.
europepmc   +1 more source

Black hole information turbulence and the Hubble tension. [PDF]

Sci Rep
Cabrera Fernández JL.
europepmc   +1 more source

Ionized Keplerian Disks Demonstrating Interplay Between Strong Gravity and Magnetism. [PDF]

Entropy (Basel)
Stuchlík Z, Vrba J.
europepmc   +1 more source

The Wafold: Curvature-Driven Termination and Dimensional Compression in Black Holes. [PDF]

Entropy (Basel)
Viaña J.
europepmc   +1 more source